Question

The figure represents a multiflash photograph of a small ball being shot straight up by a spring. The spring, with the ball atop, was initially compressed to the point marked X and released. The ball left the spring at the point marked Y, reaches its highest point at the point marked Z. 26. Assuming that the air resistance was negligible; (A) The acceleration of the ball was greatest just before it reached point Y (still in contact with the spring). (B) The acceleration of the ball was decreasing on its way from point Y to point Z. (C) The acceleration of the ball was zero at point Z (D) All of the above responses are correct. (E) The acceleration of the ball was the same for all points in its trajectory from points Y to Z.

          The figure represents a multiflash photograph of a
small ball being shot straight up by a spring. The
spring, with the ball atop, was initially compressed
to the point marked X and released. The ball left
the spring at the point marked Y, reaches its
highest point at the point marked Z.
26. Assuming that the air resistance was negligible;
(A) The acceleration of the ball was greatest just
before it reached point Y (still in contact with
the spring).
(B) The acceleration of the ball was decreasing on
its way from point Y to point Z.
(C) The acceleration of the ball was zero at point
Z
(D) All of the above responses are correct.
(E) The acceleration of the ball was the same for
all points in its trajectory from points Y to Z.

The figure represents a multiflash photograph of a
small ball being shot straight up by a spring. The
spring, with the ball atop, was initially compressed
to the point marked X and released. The ball left
the spring at the point marked Y, reaches its
highest point at the point marked Z.
26. Assuming that the air resistance was negligible;
(A) The acceleration of the ball was greatest just
before it reached point Y (still in contact with
the spring).
(B) The acceleration of the ball was decreasing on
its way from point Y to point Z.
(C) The acceleration of the ball was zero at point
Z
(D) All of the above responses are correct.
(E) The acceleration of the ball was the same for
all points in its trajectory from points Y to Z.

Added by Ana H.

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